package com.example.mr.sort;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;

import java.io.IOException;

/**
 * @author lbq
 * @version 1.0
 * @date 2021/11/5 0:36
 */
public class WordSortMapper extends Mapper<LongWritable, Text, IntWritable, IntWritable> {

    private final IntWritable one = new IntWritable(1);
    private final IntWritable num = new IntWritable();

    @Override
    protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
        num.set(Integer.parseInt(value.toString()));
        context.write(num, one);
    }
}
